JP2013506809A - Automotive condenser with improved integration - Google Patents

Abstract

  The present invention relates to a punched plate defining a first blade for circulation of a first fluid and a second blade for circulation of a second fluid, which is arranged longitudinally and arranged alternately with said first blade. 20) including a condenser (10, 20) used in an air conditioning circuit of an automobile. The condenser allows alternate circulation of the first fluid. According to the present invention, the condenser comprises a first fluid inlet line (28) and a first fluid outlet line (30) provided on a single first end face (24) of the stack. including.

Description

  The present invention relates to the field of air conditioning circuits, and in particular to the field of automotive air conditioning circuits.

  More specifically, the present invention relates to a first blade for circulation of a first fluid and a second blade for circulation of a second fluid that are alternately arranged with the first blade, which are stacked in the longitudinal direction. At least two connecting lines, a punching plate defining the first plate, a longitudinal arrangement of inlet and outlet orifices respectively belonging to a blade for the first fluid, and two first collectors formed by installation in fluid communication One of the first collectors known as the first fluid inlet collector, the other of the first collectors known as the first fluid outlet collector including at least two separate connection lines, and the first fluid inlet collector. A first inlet pipe stub for a first fluid leading to one connection line, called upstream, of the connection line of the first and second outlet lines of the first fluid. A first outlet pipe stub for a first fluid leading to a connection line called downstream, wherein the connection line of the first fluid inlet collector and the connection line of the outlet collector are directed from the inlet collector to the outlet collector A condenser used in such a circuit, arranged to allow an alternating circulation of the first fluid from the upstream connection line to the downstream connection line.

  A condenser of this type is already known, in particular from FR 2846733.

  This type of condenser must be installed inside the vehicle and connected to the circuits of the first and second fluids. The size and connectability of these condensers is particularly important for incorporating the condenser into a vehicle. In addition, connections between the condenser and other parts of the circuit are required to be easily accessible to facilitate assembly and subsequent maintenance operations.

French Patent Application Publication No. 2846733

  Since it became clear that the currently known condensers were only partially satisfactory, the applicant adopted the goal of improving the situation.

  The proposed condenser has the downstream connection line connected to the outlet pipe stub so that the first inlet pipe stub and the first outlet pipe stub are provided on the same first end face of the laminate. It is a condenser as defined by the introduction, with an outlet line.

  Thus, the inlet and outlet of the first fluid are on the same side of the exchanger, including the case where the first fluid relates to the refrigerant fluid passing through the condenser. This facilitates integration within the vehicle and improves accessibility to problematic condenser connections.

  In the form of a condenser according to the invention, the upstream connection line is close to the first end face, while the downstream connection line is remote from it.

  The condenser further includes two second collectors formed by, for example, a longitudinal arrangement of inlet and outlet orifices respectively belonging to the blades for the second fluid and installation in fluid communication.

  According to one embodiment, the first collectors are juxtaposed in the lateral direction and / or the second collectors are juxtaposed in the lateral direction.

  The first inlet pipe stub and / or the first outlet pipe stub can pass through the first end face.

  The condenser comprises, for example, a suction plate of suction and / or discharge orifices belonging to the blade for the first fluid, each defining two connection lines in the first respective collector. At least one of the mekra plates is also configured to pass the exit line.

  For this purpose, the mekura plate is provided with, for example, an orifice having a shape corresponding to the cross section of the outlet line at least in the vicinity of the mekra plate, and a sealing means disposed outside between the outlet line and the mekura plate. It is done. The sealing means particularly includes solder attachment.

  According to one embodiment, the outlet line sequentially passes through the inlet and / or outlet orifices of each blade forming a connecting line adjacent to the downstream connecting line in the outlet collector of the first fluid.

  The outlet line similarly passes through the inlet and / or outlet orifices of each blade forming a connecting line disposed longitudinally between the downstream connecting line and the first end face in the outlet collector of the first fluid. it can.

  According to one particular embodiment, the first part of the stack defines a second blade which is arranged alternately with a part of the first blade, while the stack to which the downstream connection line belongs. The second part of the body defines a third blade for circulation of a third fluid that is interleaved with the other part of the first blade.

  According to this embodiment, the condenser is further formed by, for example, a longitudinal arrangement of inlet and outlet orifices laterally juxtaposed to each other and belonging to the blade for the second fluid, respectively, and installation in fluid communication And includes two third collectors defined generally by at least two connection lines, a third inlet tube stub for a third fluid, and a third outlet tube stub.

  In particular, a third inlet pipe stub and a third outlet pipe stub pass through the second end face of the stack, which is longitudinally opposite the first end face.

  The third inlet tube stub and the third outlet tube stub may each be in fluid communication with the third collector.

  The first and second portions of the stack are separated from each other by, for example, an intermediate separation plate. The intermediate separation plate consists in particular of a first orifice configured to pass an outlet pipe stub. The intermediate separation plate may also be configured to block the inlet and outlet orifices belonging to the blade for the second fluid remote from the first end face.

  According to one particular embodiment, the separation plate is provided with supplementary orifices that are calibrated to place the second collector and the third collector, respectively, in fluid communication, the second and third fluids having their The same, and the condenser comprises a single inlet tube stub and a single outlet tube stub for the same fluid.

  Other features and advantages of the present invention will become apparent upon review of the following detailed description and accompanying drawings.

1 shows a first embodiment of a condenser according to the invention as seen in an isometric perspective view. Fig. 2 shows the condenser of Fig. 1 viewed in an exploded isometric perspective view with some of the plates omitted. Fig. 2 shows the condenser of Fig. 1 in plan view as seen from above. FIG. 4 is a diagram of the condenser of FIG. 1 viewed in cross section along line IV-IV in FIG. 3. Fig. 5 shows the condenser of Fig. 1 as viewed in section along the line V-V in Fig. 3; Fig. 6 shows a second embodiment of the condenser in a view similar to that of Fig. 5;

  The figure generally includes elements of some nature. Nevertheless, the diagram can be used not only to facilitate understanding of the description, but also to contribute to its definition when necessary.

  1 to 5 show a condenser 10 intended to be part of an air conditioning circuit not shown here, particularly for automobiles.

  In such a circuit, the refrigerant fluid or the first fluid is supplied in a closed loop to the compressor, the condenser (condenser), the expansion valve (decompression device) and the evaporator (evaporator), and the compressor (compressor). Pass by before returning.

  Here, the condenser 10 is intended to function with a refrigerant fluid that can exist in both a liquid state and a gas state, such as a fluoride fluid, known as R134a.

  The condenser 10 includes a first heat exchange block 12 that reliably cools the refrigerant fluid to its condensation point with the first cooling fluid.

  The cooling fluid may be water to which, for example, a glycol antifreeze is added.

  The condenser 10 also includes a second heat exchange block 14 that reliably performs subcooling of the refrigerant fluid by the second cooling fluid.

  The second cooling fluid can also be water with an antifreeze added. In particular, the second cooling fluid and the first cooling fluid may be the same fluid circulating in the same circuit.

  The condenser 10 may further include a bottle (not shown) that is disposed between the first block 12 and the second block 14 and is suitable for passage of the refrigerant fluid.

  When arriving from the compressor, the gaseous refrigerant fluid is first cooled to the condensation point in the first block 12. If necessary, this refrigerant fluid passes through the bottle where it is filtered and dewatered. Next, the condensed refrigerant fluid passes through the second block 14, and the subcooling is reliably performed.

  The condenser 10 further includes a first sole plate 16 and a second sole plate 18, both of which are sandwiched between the first block 12 and the second block 14. The first sole plate 16 and the second sole plate 18 form an interface (boundary) for circulating the refrigerant fluid between the first block 12 and the second block 14.

  In a variant embodiment not shown here, the condenser includes a specific plate, which has a similar shape to the plates of the first and second blocks, It has only two orifices and separates the two blocks and at the same time allows refrigerant fluid communication between the two blocks through the two orifices.

  The first block 12 includes a series of stamped plates 20 stacked in one longitudinal direction of the condenser 10. In this case, the punching plate 20 has an overall shape of a rectangular dish. The punching plate 20 of the first block 12 defines a circulation blade for the refrigerant fluid, which alternates with the circulation blade for the first cooling fluid. In other words, these punching plates 20 define a first blade for circulation of the refrigerant fluid and a second blade for circulation of the first cooling fluid arranged alternately with the first blade.

  The second block 14 also includes a series of punched plates 22 stacked in the longitudinal direction of the condenser 10. In this case, the punched plate 22 exhibits an overall appearance similar to the punched plate 20. These punching plates 22 form a circulation blade for the refrigerant fluid, which is arranged alternately with the circulation blade for the second cooling fluid. In other words, these punching plates 22 define third blades for circulation of the second refrigerant fluid, which are arranged alternately in a part of the first blades.

  In other words, the stack of stamped plates 20 and 22 includes a first portion corresponding to the first heat exchange block 12 defining second blades alternately disposed within the first portion of the first blade, and The other part of the stack of punched plates defines third blades arranged alternately in the other part of the first blade.

  The punching plate 20 of the first block 12 is maintained between the first sole plate 16 and the first end plate 24 facing the first sole plate 16 in the longitudinal direction. The punching plate 22 of the second block 14 is included between the second sole plate 18 and the second end plate 26 facing the second sole plate 18 in the longitudinal direction.

  The first end plate 24 carries a coupling flange 28 for sucking refrigerant fluid for condensation and a coupling flange 30 for discharging condensed and subcooled refrigerant fluid. In FIG. 4, the circulation of the refrigerant fluid inside the condenser 10 is indicated by the arrow F1.

  The first cooling fluid enters the first block 12 via an inlet tube stub 32 supported by the first end plate 24 and is connected to the first block via an outlet tube stub 34 supported by the first end plate 24. Get out of 12. In FIG. 5, the circulation of the first cooling fluid is indicated by arrow F2.

  The second cooling fluid penetrates the second block 14 via an inlet tube stub 36 supported by the second end plate 26 and exits there through an outlet tube stub 38 supported by the second end plate 26. . In FIG. 5, the circulation of the second cooling fluid is indicated by the arrow F3.

  The first and second cooling fluids may be the same fluid taken at different points from the same circuit, or differ in the sense that they exhibit different compositions or belong to different circuits, or both It may be a fluid.

  Each punching plate 20 of the first block 12 has four circular orifices 39, which are located, for example, in the vicinity of each corner of the punching plate having a substantially rectangular shape. Each orifice of one punched plate 20 belongs to the longitudinal array of equivalent orifices in the group of punched plates 20 of the first block 12.

  Similarly, each punched plate 22 of the second block 14 is penetrated by four circular orifices. Two of these orifices belong to two arrays of equivalent orifices in the punched plate 22 of this block 14 respectively, and the other two orifices belong to each of the two arrays of first heat exchange block 12. Belongs.

  In a particular manner, each orifice of the punch plate 22 in the second block 14 is aligned in the longitudinal direction with an equivalent orifice array of the punch plate 20 in the first block 12.

  The latter array of orifices forms two first collectors 40 and 42 which are juxtaposed to each other in the lateral direction. These two first collectors 40 and 42 are arranged by arranging the inlet and outlet orifices belonging to the blades for the refrigerant fluid in the longitudinal direction, respectively, and by installing the inlet and outlet orifices in fluid communication. It is formed.

  These two first collectors 40 and 42 are formed by orifices belonging to the punching plate 20 of the first block 12 and orifices arranged in the punching plate 22 of the second heat exchange block 14. Two second collectors laterally juxtaposed are also formed, formed by the longitudinal arrangement and fluid communication of the inlet and outlet orifices respectively belonging to the blades for the first cooling fluid. These second collectors are formed by an array of orifices belonging to the punched plate 20 of the first block 12 only.

  Two third collectors laterally juxtaposed are also formed, formed by the longitudinal arrangement and the fluid communication installation of the inlet and outlet orifices respectively belonging to the blades for the second cooling fluid. These third collectors are formed by an array of orifices arranged in the punching plate 22 of the second heat exchange block 14 only.

  The first collectors 40 and 42 are generally defined as a plurality of connection lines.

  Thus, the first inlet collector 40 attached to the inlet coupling flange 28 is partitioned into four connection lines 52, 54, 56 and 58 adjacent to each other, while the first outlet collector attached to the discharge coupling flange 30. 42 is partitioned into three connection lines 60, 62 and 64.

  A coupling flange 28 for taking in the refrigerant fluid leads to a connection line 52 of the first inlet collector 40. Accordingly, the connection line 52 forms an upstream connection line close to the first end plate 24. From there, the refrigerant fluid circulates part of the punched plate 20 in order to reach the connection line 60 of the first outlet collector 42. From there, the refrigerant fluid is alternately circulated toward the first outlet collector of the first inlet collector, thereby connecting line 54 of the first inlet collector 40, then connecting line 62 of the first outlet collector 42, then connecting line 54. In order to reach the connection line 56 of the first inlet collector 40 adjacent to, the condenser 10 is passed laterally.

  The connection line 58 of the first inlet collector 40 is formed by the arrangement of the orifices of the punched plates 22 of the second heat exchange block 14.

  The first sole plate 16 and the second sole plate 18 are respectively penetrated by passages, and the two passages coincide with each other, and the refrigerant fluid flows from the connection line 56 of the first block 12 to the connection line 58 of the second block 14. Allow the passage of.

  From there, the refrigerant fluid reaches the connection line 64, and thus the connection line 64 forms a downstream line away from the first end face 24.

  The connection line 64 of the second block 14 is separated from the adjacent connection line 62 by the first sole plate 16 and the second sole plate 18. These first and second sole plates 18 in this case are supported on each other over the largest part of their surface.

  The remaining connection lines 52, 54, 56, 60 and 62 are segmented with respect to each other by plugging the corresponding orifices of the stamped plate 20 of the first block 12 by, for example, a flat plug 66 as seen in FIG.

  The outlet line 68 is in fluid communication between the orifice 70 disposed in the second sole plate and leading to the connection line 64 of the second block 14 and the discharge coupling flange 30. Here, the end of the inlet tube stub 68 proximate to the second block 14 is received in a suitable bore 72 provided in the first sole plate 16.

  Refrigerant fluid passes from the connection line 64 to the coupling flange 30 via the outlet line 68 to exit the condenser 10.

  The outlet line 68 thus passes through a part of the first outlet collector 40, in particular the connection lines 60 and 62.

  In other words, the outlet tube stub 68 passes through the equivalent orifice of each punched plate 20 of the block 12.

  The flat plug 66 that ensures the separation of the connection line 60 from the connection line 66 is penetrated by a matching hole corresponding to the peripheral contour of the outlet line 68 at this level.

  The soldering operation ensures a seal between the outer wall of the outlet line 68 and the flat plug 66 by creating a solder deposit there.

  In general terms, the connection line 68 passes through and coaxially with the first outlet collector 42, and the connection line 68 is in one or more of the connection lines 60, 62 present above the downstream connection line 64. An annular passage for circulating the first fluid is provided.

  The first cooling fluid penetrates the first block 12 through the inlet pipe stub 32 and reaches the second inlet collector 44.

  From there, the cooling fluid passes through the condenser 10 via its blades and arrives at the second outlet collector 46 for exit through the tube stub 34.

  This one or more additional passes through the coolant may be in a manner similar to that described above.

  The second cooling fluid enters the second block 14 via the tube stub 36 and thus exits to the third inlet collector 48. This cooling fluid reaches the outlet collector 50 via its blades and exits via the tube stub 38.

  One or more additional traffic may also be in this case.

  FIG. 6 shows a second condenser 20 as an application example of the condenser 10. The condenser 20 differs from the condenser 10 in that the same cooling fluid is utilized in the first heat exchange block 12 and the second heat exchange block 14 as the first cooling fluid and the second cooling fluid, respectively.

  In this embodiment, the second end plate 50 does not have an inlet tube stub 36 and an outlet tube stub 38. The first sole plate 16 and the second sole plate 18 are provided with a third inlet collector 48 and a third outlet collector 50 to provide cooling fluid passage from the first heat exchange block 12 to the second heat exchange block 14. Calibrated orifices 78 and 80 are provided in communication.

  In another alternative embodiment, inlet tube stubs are provided to the second and third fluids on each block, while a single outlet tube stub is provided to the second and third fluids and the condenser. Allows mixing of the second and third fluids at one of the second or third outlet collectors, pre-positioned to connect the single outlet tube stub. In this application, one or more sole plates or separation plates between two blocks are penetrated by an orifice, allowing the second and third outlet collectors to communicate, the second and third inlet collectors. Are kept separated by the one or more sole plates or separation plates.

  Any connection of the condenser 20 to the rest of the fluid circuit is provided on the same end face of the condenser 20, ie the first end plate 24.

  As a supplement or addition, the second block 14 can be replaced or completed by an internal heat exchanger, i.e. a heat exchanger in which the same fluid circulates in two types of blades under different temperature and pressure conditions. .

  The stacking of the punching plates 22 of the second block 14 can then be reversed with respect to the punching plates 20 of the first block 12.

  Here, the punching plate 20 of the first block 12 and that 22 of the second block 14 are stacked in such a manner that they are similarly shaped and oriented in an alternating fashion relative to each other. As a result, the condenser 10 can be manufactured at a low cost, and its assembly is facilitated. Nevertheless, the plate 20 of the first block 12 and that 22 of the second block 14 may differ from each other in their shape, the materials utilized for their production, or in other ways.

  Similarly, the stacking pitch of the punched plate 20 of the first block 12 and that 22 of the second block 14 may be different from each other.

  Although the first sole plate 16 and the second sole plate 18 are shown supported with respect to each other, it is particularly necessary to arrange circuit elements between the first block 12 and the second block 14. In some cases, they may be separated from each other.

  The invention is not limited to the embodiments described above which are given solely by way of example, but includes all applications that can be considered by those skilled in the art.

Claims (17)

A longitudinally stacked and punched plate (20) defining a first blade for circulation of a first fluid and a second blade for circulation of a second fluid arranged alternately with the first blade; ,
Two first collectors (40, 42) formed by a longitudinal arrangement of inlet and outlet orifices (39) respectively belonging to the blades for the first fluid and installation in fluid communication;
One of said first collectors (40) comprising at least two connection lines (52, 54, 56, 58), known as the inlet collector of said first fluid;
The other of the first collector (42), comprising at least two separate connection lines (60, 62, 64), known as the outlet collector of the first fluid;
A first inlet pipe stub (28) for the first fluid leading to a connection line called upstream (52) of the connection lines of the inlet collector of the first fluid;
A first outlet pipe stub (30) for the first fluid leading to a connection line called downstream (64) of the connection lines of the outlet collector of the first fluid;
With
The connection line of the inlet collector and the outlet collector of the first fluid is directed from the inlet collector (40) to the outlet collector (42), and from the upstream connection line (52) to the downstream connection line (64). ) Arranged to allow alternating circulation of the first fluid towards
The downstream side in communication with the outlet pipe stub (30) such that the first inlet pipe stub (28) and the first outlet pipe stub (30) are provided on the same first end face (24) of the laminate. Condenser (10, 20) used in an air conditioning circuit of a motor vehicle, characterized in that it comprises an outlet pipe (68) for installing a connection line (64).   Further comprising a longitudinal array of inlet and outlet orifices respectively belonging to the blades for the second fluid and two second collectors (44, 46) formed by installation in fluid communication. The condenser according to claim 1.   The first collector (40, 42) is juxtaposed with each other in the lateral direction and / or the second collector (44, 46) is juxtaposed with each other in the lateral direction. Condenser.   Condensation according to any of the preceding claims, characterized in that the first inlet pipe stub (28) and / or the first outlet pipe stub (30) pass through the first end face (24). vessel.   A mesh plate (66) of the inlet (39) and / or outlet orifice belonging to the blade for the first fluid, each defining two connection lines in a first respective collector, A condenser according to any one of the preceding claims, characterized in that at least one of the plates (66) is configured for the outlet line (68) to pass through.   The mecha plate (66) has an orifice having a shape corresponding to a cross section of the outlet line (68) at least in the vicinity of the mekra plate, and a seal disposed outside between the outlet line and the mekura plate. 6. A condenser according to claim 5, wherein means are provided.   The condenser according to claim 6, wherein the sealing means includes solder adhesion.   The outlet line (68) is the inlet and / or outlet of each blade forming a connection line (62) adjacent to the downstream connection line (64) in the outlet collector (42) of the first fluid ( 39) The condenser according to any one of claims 1 to 7, wherein the condenser sequentially passes through the orifice.   Each connection in which the outlet line (68) is disposed longitudinally between the downstream connection line (64) and the first end face (24) in the outlet collector (42) of the first fluid. 9. Condenser according to claim 8, characterized in that it passes through the inlet and / or outlet orifices of each blade forming a line (60, 62).   The first part of the laminate defines the second blades that are alternately arranged on a part of the first blade, while the second part of the laminate to which the downstream connection line (64) belongs. 10. A condenser according to any one of claims 2 to 9, characterized in that defines a third blade for circulation of a third fluid which is arranged alternately in the other part of the first blade.   At least two connections as a whole, formed by longitudinal arrangement of suction and discharge orifices (39) laterally juxtaposed to each other and belonging to the blade for the third fluid, respectively, and installation in fluid communication Two third collectors (48, 50) defined as lines (48, 50), a third inlet tube stub (36) for the third fluid, and a third outlet tube stub (38); The condenser according to claim 10, wherein the condenser is provided.   The third inlet pipe stub (36) and the third outlet pipe stub (38) pass through the second end face (26) of the stack, which is longitudinally opposed to the first end face (24). The condenser according to claim 10 or 11.   13. A condenser according to claim 11 or 12, wherein the third inlet pipe stub (36) and the third outlet pipe stub (38) are in fluid communication with the third collector (48, 50), respectively. .   14. A condenser according to any one of claims 10 to 13, characterized in that the first and second parts of the stack are separated from one another by intermediate separation plates (16, 18).   15. A condenser according to claim 14, wherein the separation plate (16, 18) comprises a first orifice (72) configured to allow the outlet pipe (68) to pass through.   16. The separation plate (16, 18) is configured to block the inlet and outlet orifices belonging to the blade for the second fluid remote from the first end face. The condenser as described in.   Supplementary orifices (78, 80) calibrated in the separation plate (16, 18) for locating the second collector (44, 46) and the third collector (48, 50), respectively, in fluid communication The condenser according to claim 14, wherein the condenser is provided.

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